The chestnut white-bellied rat (Niviventer fulvescens) is a species of rodent in the family Muridae.

It is a small rodent with a distinct bright chestnut upper-coat and a white under-coat.

The side of the body has a distinct margin where the upper and the under-coat meet.

The upper-side of the tail is mostly brownish whereas the underside is whitish to flesh coloured.

[2] It is found in Bangladesh, Cambodia, China, India, Indonesia, Laos, Malaysia, Nepal, Pakistan, Thailand, and Vietnam.